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        <h1 id="rsyslog-基础"><a href="#rsyslog-基础" class="headerlink" title="rsyslog 基础"></a>rsyslog 基础</h1><h2 id="日志类别"><a href="#日志类别" class="headerlink" title="日志类别"></a>日志类别</h2><pre><code>日志类型 日志内容
auth 用户认证时产生的日志
syslog 系统日志
local0~local7 自定义程序使用
等等
</code></pre>
<h2 id="Properties模板元素属性"><a href="#Properties模板元素属性" class="headerlink" title="Properties模板元素属性"></a>Properties模板元素属性</h2><p>常用的变量</p>
<pre><code>hostname 打印该日志的主机名。
fromhost 接收的信息来自于哪个节点。这里是DNS解析的名字。
fromhost-ip 接收的信息来自于哪个节点，这里是IP，本地的是127.0.0.1。
syslogtag 信息标签。大致形如 programed[14321] 。
programname 文件名

Properties与时间相关的属性属性 释义
$now 当前日期时间戳，格式为YYYY-MM-DD (2020-07-08)
$year 当前年份， 四位数 (2020)
$month 当前月份， 两位数 (07)
$day 当前月份的日期，两位数 (08)
$wday 当前天数周几 ：0=Sunday,...6=Saturday
$hour 当前小时（24小时机制），两位数(16)
$hhour 半小时机值，就是0-29分钟显示0，30-59分钟显示1。
$qhour 一刻钟机值，通过0-3显示，每15分钟一截。
$minute 当前分钟数，两位数(57)
</code></pre>
<p>示例<br>    定义日志目录</p>
<pre><code>$template RemoteTestlogs,&quot;/var/log/syslog/%fromhost-ip%/test.log&quot;

/var/log/syslog/%$YEAR%-%$MONTH%-%$DAY%/%FROMHOST-IP%-%programname%.log
</code></pre>
<p>##日志文件权限 </p>
<p>日志文件权限新生成的目录和文件权限可以在配置文件设置</p>
<pre><code> vim /etc/rsyslog.conf
 #尽量在开头设置
 $FileOwner root
 $FileGroup root
 $FileCreateMode 0755 #文件权限
 $DirCreateMode 0755 #目录权限
 $Umask 0022
 
</code></pre>
<h2 id="模版配置"><a href="#模版配置" class="headerlink" title="模版配置"></a>模版配置</h2><p> 1、示例1</p>
<pre><code> $template DynamicFile,&quot;/var/log/test_logs/%timegenerated%-test.log&quot;
 *.* ?DynamicFile
</code></pre>
<p> 2、示例2</p>
<pre><code> $template RemoteHost,&quot;/home/rsyslog-data/%$YEAR%-%$MONTH%-%$DAY%/%FROMHOST-IP%.log
 *.* ?RemoteHost
 #    &amp; ~ 忽略所有的日志.
 &amp; ~
</code></pre>
<p> 3、示例3</p>
<pre><code> #配置文件存储模板
 $template RemoteAuditLogs,&quot;/data/auditd/%FROMHOST-IP%/audit.log&quot; *
 $template RemoteNetworkLogs,&quot;/data/network-log/%HOSTNAME%/network.log&quot; *
 #引用模板
 local6.* ?RemoteNetworkLogs
 local2.* ?RemoteAuditLog   
</code></pre>
<h1 id="配置案例"><a href="#配置案例" class="headerlink" title="配置案例"></a>配置案例</h1><h2 id="客户端配置"><a href="#客户端配置" class="headerlink" title="客户端配置"></a>客户端配置</h2><p>1.2 相关配置</p>
<p> 增加imfile模块配置，【不然自定义的日志，无法发送到服务端】</p>
<pre><code>$ModLoad imuxsock # provides support for local system logging (e.g. via logger command)
$ModLoad imjournal # provides access to the systemd journal
# 下发添加 方法一
module(load=&quot;imfile&quot; PollingInterval=&quot;1&quot;) 
# 方法二
$ModLoad imfile

local7.* /var/log/local7.log

#只发送local7 类型日志
#local7.* @@121.4.27.111
#将所有日志 多发送  
*.* @@121.4.27.111
</code></pre>
<p> 新增/etc/rsyslog.d/local7.conf</p>
<pre><code>  #工作目录 这个可不配 默认/var/log/下
  #$WorkDirectory /var/log/rsyslog
  
  #输入文件模式
  input(type=&quot;imfile&quot;
       File=&quot;/var/log/local7.log&quot;   #可指定任意文件，但需要将文件权限置为777
       Tag=&quot;local7&quot;      #文件标识，服务器接收到消息可以使用这个tag分类
       Severity=&quot;info&quot;            #日志级别
       Facility=&quot;local7&quot;             
       PersistStateInterval=&quot;1&quot;     #回写偏移量数据到文件间隔时间(秒)
       ruleset=&quot;remote&quot;)          #规则集，rsyslog.conf中定义的rule名称
</code></pre>
<h2 id="服务端配置"><a href="#服务端配置" class="headerlink" title="服务端配置"></a>服务端配置</h2><p>定义开启 接收的协议 以及端口</p>
<pre><code># Provides UDP syslog reception
$ModLoad imudp
$UDPServerRun 514
 
# Provides TCP syslog reception
$ModLoad imtcp
$InputTCPServerRun 514
</code></pre>
<p>定义模版</p>
<p>   1.示例1</p>
<pre><code>#生成模板
$template SpiceTmpl,&quot;%msg:2:$%\n&quot;
$template CatalinaDynaFile,&quot;/var/log/rsyslog/%fromhost-ip%/catalina_%$YEAR%-%$MONTH%-%$DAY%.log&quot;
  
#匹配规则，文章后面将分享其他配置类型
:fromhost-ip,contains,&quot;192.168.88.132&quot; ?CatalinaDynaFile;SpiceTmpl
</code></pre>
<p>   2.示例2</p>
<pre><code>$template RemoteLogs,&quot;/var/log/syslog/%$YEAR%-%$MONTH%-%$DAY%/%FROMHOST-IP%-%programname%.log&quot;
*.* ?RemoteLogs
&amp; ~
</code></pre>
<h2 id="测试"><a href="#测试" class="headerlink" title="测试"></a>测试</h2><pre><code>-it error：这是两个选项的组合。-i选项指定附加进程ID（PID）到日志消息中，-t error选项指定将&quot;error&quot;作为消息的标记（TAG）。
-p local5.crit：这是指定日志消息的优先级的选项。在这个例子中，local5.crit表示使用syslog的local5设施和crit（严重）优先级。
&quot;hello world&quot;：这是要记录的实际消息内容。

该命令用于向系统日志中添加一条日志消息
logger -it local1 -p local1.info &quot;hello&quot;
</code></pre>

      
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  <script type="text/javascript">
    // Popup Window;
    var isfetched = false;
    var isXml = true;
    // Search DB path;
    var search_path = "search.xml";
    if (search_path.length === 0) {
      search_path = "search.xml";
    } else if (/json$/i.test(search_path)) {
      isXml = false;
    }
    var path = "/" + search_path;
    // monitor main search box;

    var onPopupClose = function (e) {
      $('.popup').hide();
      $('#local-search-input').val('');
      $('.search-result-list').remove();
      $('#no-result').remove();
      $(".local-search-pop-overlay").remove();
      $('body').css('overflow', '');
    }

    function proceedsearch() {
      $("body")
        .append('<div class="search-popup-overlay local-search-pop-overlay"></div>')
        .css('overflow', 'hidden');
      $('.search-popup-overlay').click(onPopupClose);
      $('.popup').toggle();
      var $localSearchInput = $('#local-search-input');
      $localSearchInput.attr("autocapitalize", "none");
      $localSearchInput.attr("autocorrect", "off");
      $localSearchInput.focus();
    }

    // search function;
    var searchFunc = function(path, search_id, content_id) {
      'use strict';

      // start loading animation
      $("body")
        .append('<div class="search-popup-overlay local-search-pop-overlay">' +
          '<div id="search-loading-icon">' +
          '<i class="fa fa-spinner fa-pulse fa-5x fa-fw"></i>' +
          '</div>' +
          '</div>')
        .css('overflow', 'hidden');
      $("#search-loading-icon").css('margin', '20% auto 0 auto').css('text-align', 'center');

      $.ajax({
        url: path,
        dataType: isXml ? "xml" : "json",
        async: true,
        success: function(res) {
          // get the contents from search data
          isfetched = true;
          $('.popup').detach().appendTo('.header-inner');
          var datas = isXml ? $("entry", res).map(function() {
            return {
              title: $("title", this).text(),
              content: $("content",this).text(),
              url: $("url" , this).text()
            };
          }).get() : res;
          var input = document.getElementById(search_id);
          var resultContent = document.getElementById(content_id);
          var inputEventFunction = function() {
            var searchText = input.value.trim().toLowerCase();
            var keywords = searchText.split(/[\s\-]+/);
            if (keywords.length > 1) {
              keywords.push(searchText);
            }
            var resultItems = [];
            if (searchText.length > 0) {
              // perform local searching
              datas.forEach(function(data) {
                var isMatch = false;
                var hitCount = 0;
                var searchTextCount = 0;
                var title = data.title.trim();
                var titleInLowerCase = title.toLowerCase();
                var content = data.content.trim().replace(/<[^>]+>/g,"");
                var contentInLowerCase = content.toLowerCase();
                var articleUrl = decodeURIComponent(data.url);
                var indexOfTitle = [];
                var indexOfContent = [];
                // only match articles with not empty titles
                if(title != '') {
                  keywords.forEach(function(keyword) {
                    function getIndexByWord(word, text, caseSensitive) {
                      var wordLen = word.length;
                      if (wordLen === 0) {
                        return [];
                      }
                      var startPosition = 0, position = [], index = [];
                      if (!caseSensitive) {
                        text = text.toLowerCase();
                        word = word.toLowerCase();
                      }
                      while ((position = text.indexOf(word, startPosition)) > -1) {
                        index.push({position: position, word: word});
                        startPosition = position + wordLen;
                      }
                      return index;
                    }

                    indexOfTitle = indexOfTitle.concat(getIndexByWord(keyword, titleInLowerCase, false));
                    indexOfContent = indexOfContent.concat(getIndexByWord(keyword, contentInLowerCase, false));
                  });
                  if (indexOfTitle.length > 0 || indexOfContent.length > 0) {
                    isMatch = true;
                    hitCount = indexOfTitle.length + indexOfContent.length;
                  }
                }

                // show search results

                if (isMatch) {
                  // sort index by position of keyword

                  [indexOfTitle, indexOfContent].forEach(function (index) {
                    index.sort(function (itemLeft, itemRight) {
                      if (itemRight.position !== itemLeft.position) {
                        return itemRight.position - itemLeft.position;
                      } else {
                        return itemLeft.word.length - itemRight.word.length;
                      }
                    });
                  });

                  // merge hits into slices

                  function mergeIntoSlice(text, start, end, index) {
                    var item = index[index.length - 1];
                    var position = item.position;
                    var word = item.word;
                    var hits = [];
                    var searchTextCountInSlice = 0;
                    while (position + word.length <= end && index.length != 0) {
                      if (word === searchText) {
                        searchTextCountInSlice++;
                      }
                      hits.push({position: position, length: word.length});
                      var wordEnd = position + word.length;

                      // move to next position of hit

                      index.pop();
                      while (index.length != 0) {
                        item = index[index.length - 1];
                        position = item.position;
                        word = item.word;
                        if (wordEnd > position) {
                          index.pop();
                        } else {
                          break;
                        }
                      }
                    }
                    searchTextCount += searchTextCountInSlice;
                    return {
                      hits: hits,
                      start: start,
                      end: end,
                      searchTextCount: searchTextCountInSlice
                    };
                  }

                  var slicesOfTitle = [];
                  if (indexOfTitle.length != 0) {
                    slicesOfTitle.push(mergeIntoSlice(title, 0, title.length, indexOfTitle));
                  }

                  var slicesOfContent = [];
                  while (indexOfContent.length != 0) {
                    var item = indexOfContent[indexOfContent.length - 1];
                    var position = item.position;
                    var word = item.word;
                    // cut out 100 characters
                    var start = position - 20;
                    var end = position + 80;
                    if(start < 0){
                      start = 0;
                    }
                    if (end < position + word.length) {
                      end = position + word.length;
                    }
                    if(end > content.length){
                      end = content.length;
                    }
                    slicesOfContent.push(mergeIntoSlice(content, start, end, indexOfContent));
                  }

                  // sort slices in content by search text's count and hits' count

                  slicesOfContent.sort(function (sliceLeft, sliceRight) {
                    if (sliceLeft.searchTextCount !== sliceRight.searchTextCount) {
                      return sliceRight.searchTextCount - sliceLeft.searchTextCount;
                    } else if (sliceLeft.hits.length !== sliceRight.hits.length) {
                      return sliceRight.hits.length - sliceLeft.hits.length;
                    } else {
                      return sliceLeft.start - sliceRight.start;
                    }
                  });

                  // select top N slices in content

                  var upperBound = parseInt('1');
                  if (upperBound >= 0) {
                    slicesOfContent = slicesOfContent.slice(0, upperBound);
                  }

                  // highlight title and content

                  function highlightKeyword(text, slice) {
                    var result = '';
                    var prevEnd = slice.start;
                    slice.hits.forEach(function (hit) {
                      result += text.substring(prevEnd, hit.position);
                      var end = hit.position + hit.length;
                      result += '<b class="search-keyword">' + text.substring(hit.position, end) + '</b>';
                      prevEnd = end;
                    });
                    result += text.substring(prevEnd, slice.end);
                    return result;
                  }

                  var resultItem = '';

                  if (slicesOfTitle.length != 0) {
                    resultItem += "<li><a href='" + articleUrl + "' class='search-result-title'>" + highlightKeyword(title, slicesOfTitle[0]) + "</a>";
                  } else {
                    resultItem += "<li><a href='" + articleUrl + "' class='search-result-title'>" + title + "</a>";
                  }

                  slicesOfContent.forEach(function (slice) {
                    resultItem += "<a href='" + articleUrl + "'>" +
                      "<p class=\"search-result\">" + highlightKeyword(content, slice) +
                      "...</p>" + "</a>";
                  });

                  resultItem += "</li>";
                  resultItems.push({
                    item: resultItem,
                    searchTextCount: searchTextCount,
                    hitCount: hitCount,
                    id: resultItems.length
                  });
                }
              })
            };
            if (keywords.length === 1 && keywords[0] === "") {
              resultContent.innerHTML = '<div id="no-result"><i class="fa fa-search fa-5x" /></div>'
            } else if (resultItems.length === 0) {
              resultContent.innerHTML = '<div id="no-result"><i class="fa fa-frown-o fa-5x" /></div>'
            } else {
              resultItems.sort(function (resultLeft, resultRight) {
                if (resultLeft.searchTextCount !== resultRight.searchTextCount) {
                  return resultRight.searchTextCount - resultLeft.searchTextCount;
                } else if (resultLeft.hitCount !== resultRight.hitCount) {
                  return resultRight.hitCount - resultLeft.hitCount;
                } else {
                  return resultRight.id - resultLeft.id;
                }
              });
              var searchResultList = '<ul class=\"search-result-list\">';
              resultItems.forEach(function (result) {
                searchResultList += result.item;
              })
              searchResultList += "</ul>";
              resultContent.innerHTML = searchResultList;
            }
          }

          if ('auto' === 'auto') {
            input.addEventListener('input', inputEventFunction);
          } else {
            $('.search-icon').click(inputEventFunction);
            input.addEventListener('keypress', function (event) {
              if (event.keyCode === 13) {
                inputEventFunction();
              }
            });
          }

          // remove loading animation
          $(".local-search-pop-overlay").remove();
          $('body').css('overflow', '');

          proceedsearch();
        }
      });
    }

    // handle and trigger popup window;
    $('.popup-trigger').click(function(e) {
      e.stopPropagation();
      if (isfetched === false) {
        searchFunc(path, 'local-search-input', 'local-search-result');
      } else {
        proceedsearch();
      };
    });

    $('.popup-btn-close').click(onPopupClose);
    $('.popup').click(function(e){
      e.stopPropagation();
    });
    $(document).on('keyup', function (event) {
      var shouldDismissSearchPopup = event.which === 27 &&
        $('.search-popup').is(':visible');
      if (shouldDismissSearchPopup) {
        onPopupClose();
      }
    });
  </script>





  

  

  

  
  

  

  

  

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</html>
